Move from TravisCI to GH

.github/workflows/check.yml

@@ -0,0 +1,29 @@
+name: Clippy, Format & Test
+
+on: [pull_request, push, workflow_dispatch]
+
+jobs:
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+      - run: cargo fmt --all -- --check
+
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+      - run: cargo clippy -- -D warnings
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo test

README.md

@@ -1,6 +1,7 @@
 A small DSL to generate syntax diagrams using [this library](https://github.com/lukaslueg/railroad).
 
-[![Crates.io Version](https://img.shields.io/crates/v/railroad_dsl.svg)](https://crates.io/crates/railroad_dsl)[![Build Status](https://travis-ci.org/lukaslueg/railroad_dsl.svg?branch=master)](https://travis-ci.org/lukaslueg/railroad_dsl)
+[![Crates.io Version](https://img.shields.io/crates/v/railroad_dsl.svg)](https://crates.io/crates/railroad_dsl)
+[![Build status](https://github.com/lukaslueg/railroad_dsl/actions/workflows/check.yml/badge.svg)](https://github.com/lukaslueg/railroad_dsl/actions/workflows/check.yml)
 
 **[Some examples](https://htmlpreview.github.io/?https://github.com/lukaslueg/railroad_dsl/blob/master/examples/example_diagrams.html)**